When motion in one plane occurs within the spine, motion in another plane is mechanically forced to occur.

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Answer

Nonphysiological motion. Rotation and side bending occur in contralateral sides in cervical spine.

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Coupled motion. Rotation and side bending occur in ipsilateral sides in cervical spine.

Answer

Nonphysiological motion. Rotation and side bending occur in ipsilateral sides in cervical spine.

Answer

Coupled motion. Rotation and side bending occur in contralateral sides in the upper thoracic spine.

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